Patentti Nr. 314805
Finnish engineer Eric Tigerstedt solved the dilemma of sound-on-film already before the First World War. All images and sounds in this short film are produced from the surviving test materials originally created in 1914.
- Műfaj: Dokumentum
- Stúdió: Elokuvayhtiö Testifilmi
- Kulcsszó: early sound film
- Öntvény:
